Rocky Mountain Chapter

Welcome to the Sierra Club Rocky Mountain Chapter

The Sierra Club's members and supporters are more than 2.1 million of your friends and neighbors. Inspired by nature, we work together to protect our communities and the planet. The Club is America's oldest, largest and most influential grassroots environmental organization.

The Sierra Club's Rocky Mountain Chapter is comprised of 10 local groups spread out across the great state of Colorado. Explore this website to learn more about what we're doing, where we're headed, and how you can participate. We're involved in everything from recycling and hiking to environmental education and conservation - join in and help us protect the air, land and water throughout our beautiful state!

Calling All Water Warriors!

In 2013 Governor Hickenlooper directed the Colorado Water Conservation Board (CWCB) to develop the first state-wide Water Plan. To help steer development of a Plan that champions conservation and efficiency, the Sierra Club has initiated a campaign to engage our members and supporters, guide public input, and pressure the CWCB and the Governor to set a positive course for water use. Whether you live in Denver, Durango or the Eastern Plains, you and the rivers you love stand to be affected by Colorado’s Water Plan. Are you interested in guiding Sierra Club participation in the process? We’re looking for volunteers and team members. Please sign up here for more information.

Protect Colorado Schools from Hazardous Drilling and Fracking Projects

Fracking at Greeley Elementary
The Colorado Oil and Gas Conservation Commission, appointed by Governor Hickenlooper, is about to approve permits for drilling projects that would place 19 horizontal wells and 20 holding tanks within 1,000 feet of the playground at Frontier Elementary School located in Greeley. If that wasn’t egregious enough, Mineral Resources, Inc. is also seeking a permit for 37 new wells within 350 feet of a low income apartment complex in downtown Greeley—with no notice to the residents of these rental units! Stand with the community in Greeley and help them tell Governor Hickenlooper to say “No Fracking Way” to a fracking rig next to their child’s school or in their backyard.

Send your letter today! Tell Governor Hickenlooper we can’t allow fracking next to schools and homes.


Get a free solar estimate for your home!

Sierra Club has partnered with Sungevity, one of the country's leading rooftop solar providers to help members and supporters go solar, save money, and cut pollution. Colorado joins with several other states in this new Sierra Club offering. We're working on solutions for bringing America into the Age of Clean Energy. Whether you buy or lease your new solar power, just flip the switch on dirty coal, oil, and natural gas, and GO SOLAR! The Sierra Club Rocky Mountain Chapter benefits from every estimate given, and every solar installation. Sign up now!

Step Strong Colorado! A Sierra Club Benefit Hike to Protect the Environment

Step Strong Colorado
We need hikers, and hikers in spirit, to help us preserve and protect Colorado's air, water, wilderness areas, and outdoor recreation spaces. Step Strong Colorado! is our annual benefit hike for the environment and will take place this year on Saturday, September 13 at Roxborough State Park. Participate by staying at home and sleeping in as a Virtual Hiker; OR, join us for a wonderful day of hiking. There are 4 levels of hiking experience to choose -- from easy to challenging -- with spectacular views of red rock and sandstone formations and diverse, dazzling flora and fauna. There is truly something for everyone of any skill or interest.

You’ll have an opportunity to compete for prizes, even if you just join us in spirit. For those joining us at Roxborough, grab-&-go food items, gift bags, and free one-day park passes will be provided. Click here to register and for more information..

Take Action!

When our Conservation volunteer leaders spring into action... you can help! In fact, your help makes all the difference it takes to win! Click on "Get Involved"" or "Take Action" on the left-hand menu, or just click the Get Involved button on the top-right. Check frequently for new actions!

Facebook Updates

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Solar Share

Outings & Events Calendar


Peak & Prairie

Sierra Club Rocky Mountain Chapter | 1536 Wynkoop Street, 4th Floor, Denver CO 80202 | 303-861-8819